Section Width385 mm (15.2")
Aspect Ratio36%
Rim Diameter21"
Overall Diameter811 mm (31.9")
Sidewall Height139 mm
Circumference2547 mm
385/36R21 — Buy Tires

Everything to know about the 385/36R21 tire size

Size geometry

A 385/36R21 tire has a 385mm section width and a 36% aspect ratio, mounted on a 21-inch rim. Sidewall height works out to 138.6mm (5.46") and overall outside diameter is 810.6mm (31.91"). At highway speed the tire completes about 393 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 385/36R21 is unavailable, the closest same-diameter substitutes on the same rim are 375/37R21 and 395/35R21. Both keep your speedometer reading within 1% — safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.

Plus / minus sizing options

For a 385/36R21 you can upsize to 395/32R22 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 375/40R20 (minus-one) for a softer ride or winter setup. Both stay inside the Âą3% diameter tolerance that ABS and TPMS systems expect.

Vehicle compatibility

0 vehicles in our database run the 385/36R21 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance — match these specs to your wheel before purchasing tires.

Vehicles Using 385/36R21

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